IAC fired a senior corporate communications exec on Dec. 21 after she posted a racially tinged Twitter remark about AIDS and Africa.

"Going to Africa," tweeted Justine Sacco, senior director of corporate comms. for the New York-based Internet company on Dec. 20. "Hope I don't get AIDS. Just kidding. I'm white!"

IAC quickly fired the PR staffer after the tweet sparked social media outrage and media attention. "The offensive content does not reflect the views and values of IAC," the company said in a statement. "We take this issue very seriously, and we have parted ways with the employee in question."

Sacco, a native of South Africa, had been at IAC for three years. In a statement released in South Africa and to ABC News, she apologized for the message. "Words cannot express how sorry I am, and how necessary it is for me to apologize to the people of South Africa," she said, noting the AIDS crisis on the continent. "Unfortunately, it is terribly easy to be cavalier about an epidemic that one has never witnessed firsthand."

She previously managed corporate communications at WWE and was an account staffer at The Morris + King Company and DKC.

Anon (Dec. 23, 2013):Somebody hired her because she was young, hip and tech savvy. They got one out of three right.

Joe Honick, GMA International Ltd (Dec. 23, 2013):While this lady, the Dynasty Duck blabber and Paula Deen got the hit, Garrison Keillor has never had to repent or even apologize for his 2009 Anti-Semitic rants against Jews who wrote Christmas songs...."unknowns" like Irving Berlin and Mel Torme for example.After urging the boot for these folks, he proceeded to make shameful references to important holidays like Rosh Hashana. And all of this from a guy on the pure NPR and in widely printed feature articles.

Robert (Dec. 23, 2013):What she tweeted was undeniably ugly and reprehensible. But additionally it is a special kind of stupid for someone whose career is in PR!!!!